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Haha, I done ALL of these three months ago. Distribution is mad easy if you gots a graphing calculator.

And God you don't know shit.

"The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt in awe, is as good as dead: his eyes are closed." Albert Einstein

How the fuck do you do sines and cosines in your head? Besides how does you mental mth skill show how good at math you are? I can't do simply multiplication yet had one of the best math grades in my whole class.

Yeah, I'm gonna agree with Kirby here; did you not do ANY math subject past Year 8? Calculators pretty much become essential, not just for sine, cosine, ect, but for Cartesian graphs and ALL of the above shit Ninetails is doing.

"The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt in awe, is as good as dead: his eyes are closed." Albert Einstein

Yeah, I'm gonna agree with Kirby here; did you not do ANY math subject past Year 8? Calculators pretty much become essential, not just for sine, cosine, ect, but for Cartesian graphs and ALL of the above shit Ninetails is doing.

i do trigonometry, multivariable calculus, statistics, linear and quadratic equations and inequalities, binomials, permutations and virtually every facet of math without a calculator.